Nut-lock



PATENTE MAR. 1, 1904. N. JAMsoN.

NUT LOCK l E F Illllli 1.1.11

face of the nut.

UNITED STATES Patented March 1, 1904.

PATENT OFFICE;

' NUT-LOCK..`

SPECIFICATION forming part of Letters PatentNo. 753,273, dated'Marchrl,1904. v

Application led February 24, 1902. Serial No. $5,306. (No model.)

To all whom t may con/cerny Be it known that I, NEHEMIAH JAtnsoN, acitizen of the United States of America, and a resident of Mansfield,county of Richland, and State of Ohio, have invented certain new anduseful Improvements in Nut-Locks, of which the following is aspecification.

This invention relates to nut-locks, and has for its object to provideasimple and improved device of this character for convenient applicationwithout altering or changing the bolt in any manner whatsoever and atthe same time arrange to effectively loclr the nut against accidentalloosening.

It is furthermore designed to protect the locking engagement with thenut against blows from external objects and also to give convenientaccess to said locking engagement for facilitating the removal of thenut without damage thereto or to the bolt.

With these and other objects in view the present invention consistsinthe combination and arrangement of parts, as will be hereinafter morefully described, shown in the accompanying drawings, and particularlypointed out in the appended claims, it being understood that changes inthe form, proportion, size, and minor details may be made within thescope of the claims without departing from the spirit or sacrificing anyof the advantages of the invention.

In the drawings, Figure l is a sectional view of a rail-joint, showingthe device of the present invention applied to one of the nuts thereof.Fig. 2 is an elevation looking at the outer Fig. 3 is a rear elevationof the nut. Fig. 5 is a detail view of a modified form of washer. Fig. 6is a detail view of the implement for disengaging the washer from thenut. Fig. 7 is a detail view of another modied form of washer.

Like characters of reference designate corresponding parts in each andevery ligure of the drawings.

Although the present device isapplicable in many relations, I haveillustrated it as applied to a rail-joint, and upon reference to thedrawings it will be seen that there has been shown an ordinary rail l,having the usual type ofV Fig. 4 is a detail view of the washer.

sh-plates 2 applied to opposite sides thereof, with a bolt 3 piercingthe fish-plates and the web of the rail in the usual manner. of coursebe understood that these members form no part of the present invention,and while conventional forms have been illustrated any other preferredform may be employed without affecting the spirit of the presentinvention.. A

. In carrying out the present inventionIemploy anut 4, which is providedupon its back face with a reduced tubular boss or extension Y5,-disposed concentrically with the threaded bolt-opening of the nut andhaving a smooth cylindrical exterior. -The outer face of this boss isserrated or provided with ratchetteeth 6 for cooperation with aspring-ratchet device for locking the-nut. For cooperation with the-nutthere is a washer 7, preferably a flat metallic plate having a central,opening 8 for the reception of a bolt. At least one edge of theplate-forinstance, as indicated at 9is made straight to bear againstsome part of the device to which it is applied, so as to prevent turningof the plate upon the bolt. In the present instance the straight edge 9is at the bottom of the plate and engages the i'iange of the fish-plate.However, .if desired, the upper edge of the plate may be ex.

tended into contact with the under side of the tread of the rail toaccomplish the same purpose. A diametric slit l0 intersects the innerperipheral edge of the washer-plate and terminates short of the outeredge of the plate, as indicated in Figs. 4 and 5, while, as shown inFig. 6, this slit may also intersect the outer edge of the plate. Asindicated in Figs. 4 and 5, a slit l1 intersects the slit l() atsubstantially right angles thereto, and the material of the plate withinthe angle of the two slits is bent laterally outward to form aspringtongue 12.

In employing the present device the washer or plate is first placed uponthe bolt with the It -Will spring-tongue 12 upon the outerl face of the95 IOO A very important advantage of the present device will here benoted by reference to Fig. 2 of the drawings, wherein it will be notedthat the spring-tongue does not project beyond the periphery of the nut,and is thereby protected from blows by external objects.

For convenience in removing the nut I provide an implement in the formof a Spannerwrench (indicated at 13) and having a pair of jaws 14,adapted to straddle the nut and provided upon their inner faces withribs 15 to embrace the boss of the nut and lie in the space between theback of the nut and the washer-plate. One of the ribs 15 is tapered toprovide means for gradually forcing the tongue 12 out of engagement withthe boss and into aposition iush with the washer-plate, so as to permitof the nut being backed away from the plate without interference by thetongue.

It will here be noted that although the boss 5 may be set up tightagainst the washer and prevent further tightening of the nut thespring-tongue 11 will still be projected in front'of the washer and canbe forced back into the washer, so as to permit removal of the nut. Thisis avery important feature of the present invention, as it permits ofthe con- Venient removal of the nut no matter vhow tight it may be setup against the washer.

Having thus described the invention, what is claimed, and desired to besecured by Letters Patent, isn

1. A nut-lock embodying a nut having a concentric tubular boss upon theback thereof, the outer end of the boss being provided withratchet-teeth, and a non-rotatable washer having a spring-tongue benttherefrom and disthe bolt-opening and another slit intersecting theradial slit, that portion of the washer in the angle between the'twoslits being bent outwardly to form a spring-tongue'for engagement withthe ratchet-teeth 'of the nut.

3. A nut-lock embodying a nut having a cylindrical concentric tubularboss upon the back thereof, theouter end of the boss being provided withratchet-teeth, and a washer having one edge formed to bear againstastationary member and prevent rotation thereof, said washer also havinga bolt-opening, a substantially radial slit intersecting said openingand another slit intersecting the radial slit, that portion of thewasher in the angle between the two slits being bent out to form aspring tongue for engagement with the ratchet-teeth of the nut, thespring-tongue being of a width to lie within the external periphery ofthe nut.

Signed at Manseld this 20th day of J anuary, 1902.

NEHEMIAH JAMISON. Witnesses:

CHARLEs H. SoRG, JAMES C. Coss.

